Waveguide display with gaze tracking
A display may include a waveguide. An input coupler may couple image light into the waveguide, and an output coupler may couple the image light out of the waveguide. A surface relief grating on the waveguide may couple infrared light into the waveguide and may couple the infrared light out of the wa...
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| Main Authors | , , , |
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| Format | Patent |
| Language | Chinese English |
| Published |
10.10.2023
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| Subjects | |
| Online Access | Get full text |
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| Summary: | A display may include a waveguide. An input coupler may couple image light into the waveguide, and an output coupler may couple the image light out of the waveguide. A surface relief grating on the waveguide may couple infrared light into the waveguide and may couple the infrared light out of the waveguide. The surface relief grating may additionally or alternatively couple reflected infrared light into and out of the waveguide and towards an infrared sensor. The surface relief grating may also form a cross-coupler for the image light. The infrared sensor may collect infrared sensor data based on the reflected infrared light. A control circuit may perform a gaze tracking operation based on the infrared sensor data. The input and output couplers may also be formed from surface relief gratings or may include other optical components.
一种显示器可包括波导。输入耦合器可将图像光耦合到该波导中，并且输出耦合器可将该图像光耦合出该波导。该波导上的表面起伏光栅可将红外光耦合到该波导中并且可将该红外光耦合出该波导。该表面起伏光栅可附加地或替代地将被反射的红外光耦合到该波导中并且耦合出该波导并朝向红外传感器耦合。该表面起伏光栅还可形成用于该图像光的交叉耦合器。该红外传感器可基于该被反射的红外光而收集 |
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| Bibliography: | Application Number: CN202280014468 |